English

The charge-dependent Bonn potentials with pseudovector pion-nucleon coupling

Nuclear Theory 2020-01-08 v1

Abstract

To apply the high-precision realistic nucleon-nucleon (NNNN) potentials on the investigations of relativistic many-body methods, the new versions of charge-dependent Bonn (CD-Bonn) NNNN potential are constructed within the pseudovector pion-nucleon coupling instead of the pseudoscalar type in the original CD-Bonn potential worked out by Machleidt [Phys. Rev. C 63, 024001 (2001)]. Two effective scalar mesons are introduced, whose coupling constants with nucleon are independently determined at each partial wave for total angular momentum J4J\leq 4, to describe the charge dependence of NNNN scattering data precisely, while the coupling constants between vector, pseudovector mesons and nucleon are identical in all channels. Three revised CD-Bonn potentials adopting the pseudovector pion-nucleon couplings (pvCD-Bonn) are generated by fitting the Nijmegen PWA phase shift data and deuteron binding energy with different pion-nucleon coupling strengths, which can reproduce the phase shifts at spin-single channels and low-energy NNNN scattering parameters very well, and provide the significantly different mixing parameters at spin-triplet channels. Furthermore, the DD-state probabilities of deuteron from these potentials range from 4.22%4.22\% to 6.05%6.05\%. It demonstrates that these potentials contain different components of tensor force, which will be useful to discuss the roles of tensor force in nuclear few-body and many-body systems.

Keywords

Cite

@article{arxiv.1909.06013,
  title  = {The charge-dependent Bonn potentials with pseudovector pion-nucleon coupling},
  author = {Chencan Wang and Jinniu Hu and Ying Zhang and Hong Shen},
  journal= {arXiv preprint arXiv:1909.06013},
  year   = {2020}
}

Comments

33 pages, 9 figures, 18 tables, to be published in Chinese Physics C. The source code of potentials can be required to send an Email to hujinniu@nankai.edu.cn

R2 v1 2026-06-23T11:14:10.148Z